Revert of Implement HasInputDevices in CrasAudioManager

chromeos/audio/audio_device.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_AUDIO_AUDIO_DEVICE_H_
 #define CHROMEOS_AUDIO_AUDIO_DEVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 23 matching lines @@
 struct CHROMEOS_EXPORT AudioDevice {
   AudioDevice();
   explicit AudioDevice(const AudioNode& node);
   std::string ToString() const;
 
   // Converts between the string type sent via D-Bus and AudioDeviceType.
   // Static so they can be used by tests.
   static std::string GetTypeString(chromeos::AudioDeviceType type);
   static chromeos::AudioDeviceType GetAudioType(const std::string& node_type);
 
-  // Indicates that an input or output audio device is for simple usage like
-  // playback or recording for user. In contrast, audio device such as
-  // loopback, always on keyword recognition (AOKR), and keyboard mic are
-  // not for simple usage.
-  bool is_for_simple_usage() {
-    return (type == AUDIO_TYPE_HEADPHONE ||
-            type == AUDIO_TYPE_INTERNAL_MIC ||
-            type == AUDIO_TYPE_MIC ||
-            type == AUDIO_TYPE_USB ||
-            type == AUDIO_TYPE_BLUETOOTH ||
-            type == AUDIO_TYPE_HDMI ||
-            type == AUDIO_TYPE_INTERNAL_SPEAKER);
-  }
-
   bool is_input;
   uint64 id;
   std::string display_name;
   std::string device_name;
   AudioDeviceType type;
   uint8 priority;
   bool active;
   uint64 plugged_time;
 };
 
@@ skipping 17 matching lines @@
       return true;
     } else {
       return false;
     }
   }
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_AUDIO_AUDIO_DEVICE_H_